Scientific name: Potamon potamios. Freshwater Crab Location: Denizli Basin, Southwest Turkey Geological Formation: Travertine Deposits of Denizli Basin Age: Pleistocene ( years) Size: 7,4cm x 4,5cm (the crab) - Plate: 11 x 8 cm x 3,5cm REF.: J52 DESCRIPTION: This is a spectacular fossil freshwater crab ( genus Potamon) preserved in travertine from the Denizli Basin in Southwest Turkey. The crab exhibits amazingly detailed, 3d preservation. It's totally coated and preserved as a three-dimensional outer cast within a natural cavity of a white travertine matrix. It is covered by an inorganic film of natural calcium carbonate. Travertine is a type of limestone that forms around mineral springs. It is often quarried for use as a building material, and that is how these crabs were discovered, during the quarrying of the stone slabs. The travertine deposits in the Denizli Basin are Pleistocene in age, having been formed within the past 400,000 years. All our fossils come with Certificate of Authenticity. Every week, the issued Certificates of Authenticity are updated in our website database verification system. If you find that your certificate has not yet been updated, please contact us and we will update it immediately. Display box not included. Important shipping info: We are currently unable to offer shipping to the U.S. for items valued between €15 and €800 due to current customs regulations. We apologize for the inconvenience.